<link rel="stylesheet" href="./css/lbt.css">
<div class="box lbt1">
    <img src="./imgs/1.jpg" alt="">
    <ul>
        <li class="active"></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
    </ul>
</div>
<br>
<hr>
<br>
<div class="box lbt2">
    <img src="./imgs/1.jpg" alt="">
    <ul>
        <li class="active"></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
    </ul>
</div>


<script src="./js/lbt.js"></script>
<script>
    let lbt1 = new Lbt('.lbt1')
    let lbt2 = new Lbt('.lbt2')
// console.log(lbt1.num,lbt2.num);

</script>